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Asteroid 7 Iris

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Asteroid 7 Iris Position

Asteroid 7 Iris is currently in the constellation of Sagittarius. The current Right Ascension is 18h 40m 11s and the Declination is -23° 14’ 43”.

18h 40m 11s
-23° 14’ 43”

Simplified sky chart showing where Asteroid 7 Iris is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Asteroid 7 Iris in Sagittarius on March, 28 2020
Field of view: 60x30 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart showing where Asteroid 7 Iris is right now (view fullscreen)

7 Iris
RA: 18h 40m 11s
Dec: -23° 14’ 43”
Deep sky finder chart for Asteroid 7 Iris
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid 7 Iris?, a page that provides all the information needed to find Asteroid 7 Iris in the sky and additional links to sky charts.

Asteroid 7 Iris Distance

The distance of Asteroid 7 Iris from Earth is currently 393,766,988 kilometers, equivalent to 2.632170 Astronomical Units. Light takes 21 minutes and 53.4653 seconds to travel from Asteroid 7 Iris and arrive to us.

21 minutes and 53.4653 seconds

The following chart shows the distance of Asteroid 7 Iris from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Asteroid 7 Iris from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 7 Iris from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid 7 Iris to Earth

Between January 2013 and December 2100 the closest approach of Asteroid 7 Iris to Earth happens on Wed Nov 4 2076 at a distance of 0.84836874 Astronomical Units, or 126,914,157 kilometers:

Wed Nov 4 2076

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Asteroid 7 Iris brightness

The current visual magnitude of Asteroid 7 Iris is 10.96.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 7 Iris, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Asteroid 7 Iris between January 2013 and December 2100

Asteroid 7 Iris rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Asteroid 7 Iris rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.3°
Max altitude: 15.3°
Azimuth: 246.7°
Asteroid 7 Iris is below the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Asteroid 7 Iris touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Asteroid 7 Iris Orbital Elements

The following table lists the orbital elements of Asteroid 7 Iris at epoch 30 May 2020 00:00 UTC (JD: 2459000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.23014504
Orbit inclination i 5.52159829°
Perihelion distance q 1.83793274 AU
274,950,825 km
Aphelion distance Q 2.93681794 AU
439,341,712 km
Semi-major axis a 2.38737534 AU
357,146,268 km
Orbital period period 3.6900 years
1,347.3471 days
Date of perihelion transit Tp 2021-Jul-26 07:46:00
2,459,421.8236 JD
Argument of perihelion peri 145.20154460034°
Longitude of the ascending node node 259.56394336942°
Mean anomaly M 247.42581146248°
Mean motion n 0.26719173°/day

Visualization of Asteroid 7 Iris Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 7 Iris with respect of the Sun and the orbits of the major planets. The position of Asteroid 7 Iris and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Asteroid 7 Iris Physical Data

The following shows the known values of the most important physical parameters of Asteroid 7 Iris. Source: JPL Small-Body Database

Physical Parameter Value Relative to Earth
Diameter 199.83 km 0.0157
Sideral Rotation 7.1390 hours 0.2983
Absolute Magnitude 5.51
Geometric Albedo 0.2766

Asteroid 7 Iris 15 Days Ephemeris

The following table lists the ephemerides of Asteroid 7 Iris computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 7 Iris in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Mar 21 18h 32m 44s -23° 29’ 26” 11.06 Sagittarius
2020 Mar 22 18h 33m 46s -23° 27’ 36” 11.05 Sagittarius
2020 Mar 23 18h 34m 45s -23° 25’ 42” 11.03 Sagittarius
2020 Mar 24 18h 35m 45s -23° 23’ 49” 11.02 Sagittarius
2020 Mar 25 18h 36m 45s -23° 21’ 53” 11.01 Sagittarius
2020 Mar 26 18h 37m 42s -23° 19’ 58” 11.00 Sagittarius
2020 Mar 27 18h 38m 39s -23° 18’ 01” 10.98 Sagittarius
2020 Mar 28 18h 39m 36s -23° 16’ 01” 10.97 Sagittarius
2020 Mar 29 18h 40m 31s -23° 14’ 02” 10.96 Sagittarius
2020 Mar 30 18h 41m 25s -23° 12’ 01” 10.95 Sagittarius
2020 Mar 31 18h 42m 17s -23° 09’ 59” 10.93 Sagittarius
2020 Apr 01 18h 43m 09s -23° 07’ 57” 10.92 Sagittarius
2020 Apr 02 18h 43m 59s -23° 05’ 53” 10.91 Sagittarius
2020 Apr 03 18h 44m 49s -23° 03’ 48” 10.89 Sagittarius